Joist connection



May 27, 1936; H. H. LAMPERT 1,759,908

JOIST CONNECTION Filed May 16, 1928 2 Sheets-Sheet l May 27, 1930. H. H. LAMPERT JoIsT CONNECTION I Filed May` 16, 1928 2 Sheets-Sheet 2 jThis invention 'relates fito' llmpvrovedfmeansf for y"snpportin'g1 and j assemblingV concreteloor mold constru'tonsf' f f yIn'L building construction 'fwheref concrete '51 ,floors Aare to :bey erected," ,-it is 'customary'j totv 1 build a mold for,theloW-I'd surfacehojftqhe f ,f floors and to supportY this mold eithei'rom 16 f yccijurse;prefeif'able tosupportitheA mold Vvas 'ments-f adj acentfv the levelffo'fl "the` iioorto be l builtl" "This 'usually involves the provisiony f of, a pluralityof,temporaryjoistsrestingion 1;*5'.theflovverf-langesof ste'el lIbeams forming `i2() floor beams;andifgirdesfwithconcretegl thef f ventjes-elements einteilen,:upv hebamme-ff the moldmnst'befshapedjsoa to'vlho'u'se the:r

steel beams in such 4manner that the. concrete Willow aroundheil- 1.@1f1-.heff0fe agiles' Y heretofore been @thefpractieeff the j mold sup'- porting' joists are .provided vvvith" extensions i l whereby themold "supporting joists may 'be l suspended by tie elements sov as to reduce to'af* minimum the amount' @of retouching thatl has.

' j, to' be done to the..mollded,concrete*and alsof 1 consequently, weaken the concretel structure..

I ll. i The main objects ofythis#inventionarey to provide an improved concreteform construe' tion `AfparticularlyY adapted for use/in the building of concrete floorsl y between. 1st-rue f p tural y steel shapes;l.`toIprov'id'e" an limproved I`415'conerete ifloor Y formgy of `-the, s type involving the use of'joists for supportingcertain secv tions; jto y,provide improved"Inean's` `r fofsusf' pendingth joists; y 't ziplrovd ,improvedmeansof this kind which-fareadaptedzfor i l $56 attachment to the extremitiesof yjoists fjJjoisiLgeolaNfsejTi '-1 taken` fromith'efleftfofvFig. I3; ffigi'g. g5 'is Fig.6is an endelevation of for "suppcrtiiigui joies-'between thestrc-l y i tural shapes g and'to` provide an improvedv bracket adapted yfor attachmentto the joists for supporting and bracing laterally extend` fmghead 4or slielf'elenients thereon; j` .55

".An-lllustrative :embodimentl of this ii'lveni, l f s tion` 1s showninthe accompanying drawings,`. Y,

wherein :e

- kF, lgure '1 'is'airagmentary verticalgsection throughga-o'oncrete-oor mold .constructed am* 5 taken on" the line 14-1 "of Fig.' 2..,

cording ytti-,this nventonjrs'aid section-beging: 'Y y rFie is #vertiersectioned-the'eine taken 'fon thedine Y 2-2' of .'Fig. l'.

:,F'gf' 's a topplan o-oneofthe improved ,65 l

shoes for attachment to the lends if-,aAJ-Oiv-S-Lrv from the right of'jFig'.'3.' Y Fig. 'Y 7 1s'Y perspective`` of one l0`f-1the I embeddedfplwithminor beams5-.usually called;y lik itkvlmedby means ofmold elementsin/ 85" 4 lt e1 ormofzin t'df" 'ff 4 to obviate the u'seof extensionsjon'themoldg 'Vere pans l hav-mg @may L 1 -supportingjoists which leave ylarge holes and beams are suspended by. ities `V6'Ifnasjleaof band-'steel fastenedby meansxoff'tlie clamps,` l 

